fixed - string with different case

.changeset/gorgeous-poems-wash.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-org': patch
+---
+
+Fixed - normalizing strings for comparison when ignoring when one is in low case.

plugins/org/src/components/Cards/Group/MembersList/MembersListCard.tsx

@@ -125,7 +125,9 @@ export const MembersListCard = ({
       UserEntity
     >).filter(member =>
       member?.relations?.some(
-        r => r.type === RELATION_MEMBER_OF && r.target.name === groupName,
+        r =>
+          r.type === RELATION_MEMBER_OF &&
+          r.target.name.toLowerCase() === groupName.toLowerCase(),
       ),
     );
     return groupMembersList;